AU2008267440B2 - Process and apparatus for producing iron sponge - Google Patents
Process and apparatus for producing iron sponge Download PDFInfo
- Publication number
- AU2008267440B2 AU2008267440B2 AU2008267440A AU2008267440A AU2008267440B2 AU 2008267440 B2 AU2008267440 B2 AU 2008267440B2 AU 2008267440 A AU2008267440 A AU 2008267440A AU 2008267440 A AU2008267440 A AU 2008267440A AU 2008267440 B2 AU2008267440 B2 AU 2008267440B2
- Authority
- AU
- Australia
- Prior art keywords
- reducing gas
- gas distribution
- distribution ducts
- reduction shaft
- ducts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000009826 distribution Methods 0.000 claims abstract description 97
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 11
- 235000013980 iron oxide Nutrition 0.000 claims description 13
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 12
- 229960005191 ferric oxide Drugs 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 114
- 238000001465 metallisation Methods 0.000 description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/005—Shaft or like vertical or substantially vertical furnaces wherein no smelting of the charge occurs, e.g. calcining or sintering furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
- F27B15/02—Details, accessories, or equipment peculiar to furnaces of these types
- F27B15/10—Arrangements of air or gas supply devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen
Abstract
Process and apparatus for producing iron sponge from particulated material containing iron oxide by direct reduction in a reduction shaft (1) using a reducing gas, in which the total reducing gas is introduced uniformly distributed over the entire reduction shaft cross section by means of a plurality of star-like or parallel reducing gas distribution channels (2), preferably into the lower quarter of the reduction shaft (1).
Description
1 Process and apparatus for producing iron sponge Description The invention relates to a process and an apparatus for producing sponge iron from iron-oxide-containing material 5 in lump form by direct reduction in a reduction shaft using a reducing gas. When producing sponge iron, also referred to as direct reduction iron, by direct reduction, the reduction shaft is charged from above with iron oxides in lump form, such 10 as pellets and/or lump ores, through which a rising reducing gas is made to flow on the basis of the counterflow principle. The reducing gas that is introduced into the reduction shaft, preferably being at a temperature of 750 to 900*C, containing dust and rich in 15 carbon monoxide and hydrogen, in particular containing 70 to 90% CO and Hz, is preferably produced in a fusion gasifier or in some other gas generator. In this way, the iron oxide in lump form is reduced completely or partially to sponge iron and a degree of metallization of from 80% 20 to over 95% of the sponge iron can be achieved. In the apparatuses and processes that are known from the prior art, the reducing gas is introduced at the circumference of the reduction shaft, for example by means of an annular duct that is formed by refractory bricks, 25 known as a bustle duct. When the reducing gas is introduced by means of such a bustle duct, however, less reducing gas reaches the middle of the reduction shaft, and so the degree of metallization in the outer region is higher than it is toward the middle of the reduction 2898338_1 (G HMatters) P82666.AU 19/om 2 shaft. Since a poured fill with a lower degree of metallization has a greater bulk weight than such a fill with a higher degree of metallization, and also breaks down to a greater extent, the motion of the filling 5 process is concentrated toward the middle of the reduction shaft. This centrally concentrated motion has the effect that the uneven distribution of the specific amount of reducing gas is further exacerbated. The uneven distribution of the reducing gas is all the greater the 10 larger the diameter of the reduction shaft and the greater the amount of dust contained in the reducing gas. Furthermore, the bustle duct formed by refractory bricks requires a lining, which is costly, susceptible to wear and therefore keeps having to be renewed. 15 In DE2628447A1, in addition to the bustle duct, a central feeding device below the level of the bustle duct is described. According to EP0904415A1, additional reducing gas inlets in the form of downwardly open ducts or obliquely downwardly directed lines with an open inner end 20 are likewise located below the level of a bustle duct. Although these apparatuses provide a better supply of reducing gas toward the middle, the reduction shaft with the bustle duct and gas distribution ducts in the middle is costly and still has the disadvantage that the reducing 25 gas is introduced at the same pressure at two different levels, as a specific result of which more reducing gas per m 2 is introduced through the higher inlet, since the upward path of the gas is shorter there. Less reducing gas specifically means, however, a lower degree of 2898338_1 (GHMatters) P82666.AU 19/10/11 3 metallization of the fill in the middle of the reduction shaft. It would be advantageous if the present invention would provide a simple process and a simple apparatus with 5 which uniform distribution of the reducing gas, and consequently uniform metallization, are obtained without the use of a bustle duct and the associated costly and wear-susceptible lining of the reduction shaft. The subject matter of an aspect of the present invention 10 is accordingly a process for producing sponge iron from iron-oxide-containing material in lump form by direct reduction in a reduction shaft using a reducing gas, which process is characterized in that the entire reducing gas is introduced by means of a number of reducing gas 15 distribution ducts in a star-like arrangement or arranged parallel to one another, preferably into the lower quarter of the reduction shaft. To carry out the process, iron-oxide-containing material in lump form, such as pellets and/or lump ore, is 20 introduced into a reducing shaft from above. In addition, gas, known as reducing gas, preferably at a temperature of 750 to 9000C, produced in particular in a fusion gasifier, containing dust and rich in carbon monoxide and hydrogen, in particular containing 70 to 90% CO and H 2 , is introduced 25 via reducing gas distribution ducts, preferably in the lower quarter of the reduction shaft. The reducing gas introduced rises upward and thereby reduces the iron oxide to form sponge iron. The exclusive introduction of the entire reducing gas via the reducing gas distribution 2898338_1 (GHMatters) P82666.AU 19/10/11 4 ducts in a star-like arrangement or arranged parallel to one another brings about a uniform distribution of the reducing gas and the dust contained in it over the entire cross section of the reduction shaft. 5 DE 28 10 657 discloses a reduction shaft which has in addition to a bustle pipe devices for the introduction of process gases, such as for example natural gas. Disadvantages in this case are the uneven introduction of the reducing gas via the bustle pipe and the high cost of 10 the apparatus. WO 00/36159 describes a reduction shaft in which reducing gas is introduced at two levels or in two zones. Disadvantages are, in particular, the great technical cost of the plant and the high requirements for controlling the 15 introduction of the reducing gas. The reducing gas distribution ducts are downwardly open half-pipe shells that are fastened on skid pipes and have downwardly extended parallel walls. When the reduction shaft is charged from above with the iron oxide fill, a 20 space that is free from fill is created under the half pipe shells and from there the reducing gas passes uniformly into the fill. The reducing gas distribution ducts may be in a star-like arrangement and be of the same length or of different 25 lengths. With preference, they are of different lengths, the shorter reducing gas distribution ducts preferably being overhung-mounted and the longer reducing gas distribution ducts preferably being supported by water cooled supporting pipes. A star-like arrangement means 2898338_1 (GHMatters) P82666.AU 19/1om 5 that a number of reducing gas distribution ducts, preferably 4 to 12, in particular 8, extend from the wall of the reduction shaft into the interior of the reduction shaft, all the reducing gas distribution ducts being 5 directed toward the center point of the reduction shaft. With preference, a longer reducing gas distribution duct is then respectively arranged alongside a shorter duct, the longer reducing gas distribution ducts preferably being fitted over the discharge hoppers for the sponge 10 iron. Arranged at the lower end of the discharge hoppers are preferably water-cooled discharge worms or other discharge devices. The reducing gas distribution channels are preferably on one level. 15 In the case of an arrangement in which a longer reducing gas distribution duct is respectively arranged alongside a shorter duct, it is however also possible with preference to fit the shorter, overhung-mounted reducing gas distribution ducts just above the longer, supported 20 reducing gas distribution ducts. This may possibly be of advantage when using ores that have a tendency to break up and for bridges to form. It is important here that the reducing gas distribution ducts at different heights lie so closely one above the 25 other that there is virtually no difference in pressure when the reducing gas is introduced. The reducing gas distribution ducts may also be arranged in parallel and be of the same length or of different lengths. With preference, the reducing gas distribution 2898338_1 (GHMatters) P82666.AU 191om 6 ducts are in this case on one level. In the case of small diameters of the reduction shaft, the entire reducing gas is preferably introduced via a number of reducing gas distribution ducts, preferably 2 to 8, in particular 4, 5 arranged in parallel, extending continuously from the wall of the reduction shaft to the opposite wall of the reduction shaft. In the case of reduction shafts of average size, there may additionally be two reducing gas distribution ducts lying opposite each other, directed 10 toward the middle along the diameter of the shaft and parallel to the other reducing gas distribution ducts extending continuously from the wall of the reduction shaft to the opposite wall of the reduction shaft. These additional, shorter reducing gas distribution ducts are 15 with preference supported by water-cooled supporting pipes. The present invention provides in another aspect a process for producing sponge iron from iron-oxide-containing material in lump form by direct reduction in a reduction 20 shaft using a reducing gas, wherein the entire reducing gas is introduced by means of a number of reducing gas distribution ducts in a star-like arrangement or arranged parallel to one another, preferably into the lower quarter of the reduction shaft, and evenly distributed over the 25 entire cross section of the reduction shaft, the reducing gas distribution ducts being arranged on one level or, in the case of reducing gas distribution ducts in a star-like arrangement, a longer reducing gas distribution duct being respectively arranged alongside a shorter duct, the 30 shorter reducing gas distribution ducts being arranged just above the longer reducing gas distribution ducts in 2898338_1 (GHMatters) P82666.AU 19i1oi11 7 such a way that there is virtually no difference in pressure when the reducing gas is introduced. The present invention provides in a further aspect an apparatus, for producing sponge iron from iron-oxide s containing material in lump form by direct reduction using a reducing gas, comprising a reduction shaft , and reducing gas distribution ducts for feeding the entire reducing gas into the reduction shaft, wherein, reducing gas distribution ducts in a star-like arrangement or 10 reducing gas distribution ducts arranged parallel to one another are provided in the lower quarter of the reduction shaft, the reducing gas distribution ducts comprising downwardly open half-pipe shells with downwardly extended parallel walls and skid pipes, the reducing gas 15 distribution ducts being arranged on one level or, in the case of reducing gas distribution ducts in a star-like arrangement, a longer reducing gas distribution duct being respectively arranged alongside a shorter duct, the shorter reducing gas distribution ducts being arranged 20 just above the longer reducing gas distribution ducts. Further subject matter of an aspect of the present invention is an apparatus for producing sponge iron from iron-oxide-containing material in lump form by direct reduction in a reduction shaft (1) using a reducing gas, 25 which apparatus is characterized in that the entire reducing gas is fed in via a number of reducing gas distribution ducts (2a, 2b) in a star-like arrangement, preferably in the lower quarter of the reduction shaft (1), or reducing gas distribution ducts (2) arranged 2898338_1 (GHMatters) P82666.AU 19/1om 8 parallel to one another, preferably in the lower quarter of the reduction shaft (1). The invention is explained in more detail below on the basis of exemplary embodiments that are represented in the 5 figures, in which: Figure 1 shows a vertical section through a reduction shaft (1) in which a reducing gas distribution duct (2a, 2d) and a reducing gas distribution duct (2b) are depicted, 10 Figure 2 shows a vertical section through a reducing gas distribution duct (2) with a skid pipe (3) for the introduction of the reducing gas into the fill, Figure 3 shows a horizontal section through the reduction shaft (1) as shown in Figure 1 above the reducing gas 15 distribution ducts (2a) and (2b) in a star-like arrangement, Figure 4 shows a horizontal section through the reduction shaft (1) as shown in Figure 1 above the reducing gas distribution ducts (2c) arranged in parallel and 20 Figure 5 shows a horizontal section through the reduction shaft (1) as shown in Figure 1 above the reducing gas distribution ducts (2c) and (2d) arranged in parallel. The cylindrical reduction shaft (1), charged from above with iron-oxide-containing material in lump form via 25 distribution pipes (5), is provided in the lower quarter with a number of reducing gas distribution ducts (2), through which reducing gas is introduced into the reduction shaft (1). At the lower end of the reduction 2898338_1 (GHMatters) P82666.AU 19110/11 9 shaft (1), the material reduced to sponge iron is discharged through discharge hoppers (6). Arranged at the lower end of the discharge hoppers (6) are water-cooled discharge worms or other discharge devices, which are not 5 represented in the figures. Reducing gas distribution ducts (2) are downwardly open half-pipe shells with downwardly extended parallel walls, which, as can be seen in Figure 4, are fastened on skid pipes (3), which are cooled inside, preferably by water. 10 The reducing gas distribution ducts (2) may be in a star like arrangement. The reducing gas distribution ducts (2a, 2b) in a star like arrangement may be of the same length or of different lengths. With preference, they are of different lengths; 15 with particular preference, longer reducing gas distribution ducts (2a) alternate with shorter reducing gas distribution ducts (2b), as represented in Figure 3. Then, the middle region and part of the outer region, in particular about 50%, of the reduction shaft (1) is 20 supplied with the reducing gas via the longer reducing gas distribution ducts (2a) and the remaining part of the outer region is supplied with the reducing gas via the shorter reducing gas distribution ducts (2b). Longer skid pipes (3), as are required for longer reducing gas 25 distribution ducts (2a), are usually additionally supported by water-cooled supporting pipes (4), as shown in Figure 1, which are fastened to the bottom of the reduction shaft (1), while the skid pipes (3) of the shorter reducing gas distribution ducts (2b) are 2898338_1 (GHMatters) P82666.AU 19/iomi 10 preferably overhung-mounted. In the case of reduction shafts (1) with a star-like arrangement of the reducing gas distribution ducts (2a, 2b) and having a relatively lower number of discharge 5 hoppers (6), preferably fewer than 8, in particular 4, the longer reducing gas distribution ducts (2a) are arranged with preference over the discharge hoppers (6) and the shorter ducts (2b) are arranged with preference over the spaces between the discharge hoppers (6). 10 The reducing gas distribution ducts (2a, 2b) are preferably arranged on one level. In the case of an arrangement in which a longer reducing gas distribution duct (2a) is respectively arranged alongside a shorter duct (2b), it is however also possible 15 with preference to arrange the shorter, overhung-mounted reducing gas distribution ducts (2b) just above the longer, supported reducing gas distribution ducts (2a). This may possibly be of advantage when using ores that have a tendency to break up and for bridges to form. It is 20 important here that the reducing gas distribution ducts (2a, 2b) at different heights lie so closely one above the other that there is virtually no difference in pressure when the reducing gas is introduced. The reducing gas distribution ducts (2) may also be 25 arranged parallel to one another. The reducing gas distribution ducts (2c, 2d) arranged parallel to one another may be of the same length or of different lengths and lie with preference on one level. If the reducing gas distribution ducts (2) are arranged in 2898338_1 (GHMatters) P82666.AU 19/om 11 parallel, it is sufficient, in particular in the case of small reduction shafts, for there to be two or more reducing gas distribution ducts (2c) arranged parallel to one another, made to extend continuously from the wall of 5 the reduction shaft to the opposite wall of the reduction shaft as in Figure 5. In the case of reduction shafts of average size, for instance in the case of reduction shafts of 6 to 8 m in diameter, it is advantageous to arrange two further 10 reducing gas distribution ducts (2d) along the diameter of the reduction shaft (1) and lying opposite, and to arrange the remaining reducing gas distribution ducts (2c) parallel thereto and preferably extending continuously from the wall of the reduction shaft to the opposite wall 15 of the reduction shaft, as shown in Figure 5. The reducing gas distribution ducts (2d) are in this case preferably supported by water-cooled supporting pipes (4), in a way analogous to the support of the reducing gas distribution ducts (2a) in a star-like arrangement. 20 2898338_1 (GHMatters) P82666.AU 19nloi1
Claims (9)
1. A process for producing sponge iron from iron-oxide containing material in lump form by direct reduction in a reduction shaft using a reducing gas, wherein the entire 5 reducing gas is introduced by means of a number of reducing gas distribution ducts in a star-like arrangement or arranged parallel to one another, preferably into the lower quarter of the reduction shaft, and evenly distributed over the entire cross section of the reduction 10 shaft, the reducing gas distribution ducts being arranged on one level or, in the case of reducing gas distribution ducts in a star-like arrangement, a longer reducing gas distribution duct being respectively arranged alongside a shorter duct, the shorter reducing gas distribution ducts 15 being arranged just above the longer reducing gas distribution ducts in such a way that there is virtually no difference in pressure when the reducing gas is introduced.
2. The process as claimed in claim 1, wherein, when the 20 reduction shaft is charged, spaces that are free from fill are formed under the reducing gas distribution ducts, which are formed as downwardly open half-pipe shells, and from there the reducing gas passes uniformly into the fill. 25
3. An apparatus, for producing sponge iron from iron oxide containing material in lump form by direct reduction using a reducing gas, comprising a reduction shaft , and reducing gas distribution ducts for feeding the entire reducing gas into the reduction shaft, 2898338_1 (GHMatters) P82666.AU 1911om/i 13 wherein, reducing gas distribution ducts in a star-like arrangement or reducing gas distribution ducts arranged parallel to one another are provided in the lower quarter of the reduction shaft, the reducing gas distribution 5 ducts comprising downwardly open half-pipe shells with downwardly extended parallel walls and skid pipes, the reducing gas distribution ducts being arranged on one level or, in the case of reducing gas distribution ducts in a star-like arrangement, a longer reducing gas 10 distribution duct being respectively arranged alongside a shorter duct, the shorter reducing gas distribution ducts being arranged just above the longer reducing gas distribution ducts.
4. The apparatus as claimed in claim 3, wherein the 15 reducing gas distribution ducts in a star-like arrangement are of different lengths and the shorter reducing gas distribution ducts are with preference overhung-mounted.
5. The apparatus as claimed in claim 4, wherein the longer reducing gas distribution ducts are arranged over 20 the discharge hoppers and the shorter reducing gas distribution ducts are arranged over the spaces between the discharge hoppers.
6. The apparatus as claimed in claim 3, wherein at least 2 reducing gas distribution ducts arranged in parallel are 25 made to extend continuously from the wall of the reduction shaft to the opposite wall of the reduction shaft.
7. The apparatus as claimed in claim 6, wherein the reducing gas distribution ducts are supported by water cooled supporting pipes. 2898338_1 (GHMatters) P82666.AU 1911011 14
8. A process substantially as herein described with reference to one or more of the drawings.
9. An apparatus substantially as herein described with reference to one or more of the drawings. 5 2898338_1 (GHMatters) P82666.AU 19no111
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA1003/2007 | 2007-06-28 | ||
| AT0100307A AT505490B1 (en) | 2007-06-28 | 2007-06-28 | METHOD AND DEVICE FOR PRODUCING IRON SPONGE |
| PCT/EP2008/004623 WO2009000409A1 (en) | 2007-06-28 | 2008-06-10 | Process and apparatus for producing iron sponge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2008267440A1 AU2008267440A1 (en) | 2008-12-31 |
| AU2008267440B2 true AU2008267440B2 (en) | 2011-11-17 |
Family
ID=39661412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2008267440A Ceased AU2008267440B2 (en) | 2007-06-28 | 2008-06-10 | Process and apparatus for producing iron sponge |
Country Status (20)
| Country | Link |
|---|---|
| US (2) | US8124005B2 (en) |
| EP (1) | EP2173915B1 (en) |
| JP (1) | JP2010531389A (en) |
| KR (1) | KR101424161B1 (en) |
| CN (1) | CN101688259B (en) |
| AR (1) | AR067193A1 (en) |
| AT (2) | AT505490B1 (en) |
| AU (1) | AU2008267440B2 (en) |
| BR (1) | BRPI0813231B1 (en) |
| CA (1) | CA2693003C (en) |
| CL (1) | CL2008001882A1 (en) |
| DE (1) | DE502008002494D1 (en) |
| MX (1) | MX2009013670A (en) |
| MY (1) | MY152136A (en) |
| PL (1) | PL2173915T3 (en) |
| RU (1) | RU2465335C2 (en) |
| TW (1) | TW200923104A (en) |
| UA (1) | UA97668C2 (en) |
| WO (1) | WO2009000409A1 (en) |
| ZA (1) | ZA200908506B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6312433B2 (en) | 2010-05-27 | 2018-04-18 | メルク パテント ゲーエムベーハー | Apparatus comprising an array comprising a photoluminescent compound |
| EP2653568A1 (en) | 2012-04-18 | 2013-10-23 | Siemens VAI Metals Technologies GmbH | Device and method for gassing areas in a reduction reactor shaft |
| EP3486335A1 (en) | 2017-11-15 | 2019-05-22 | Primetals Technologies Austria GmbH | Reducing gas supply for direct reduction |
| EP3935332B1 (en) * | 2019-03-08 | 2022-12-07 | Maerz Ofenbau AG | Method and shaft furnace for burning carbon-containing material in a shaft furnace |
| SE2151459A1 (en) * | 2021-11-30 | 2023-05-31 | Hybrit Dev Ab | A system for direct reduction of iron ore to sponge iron |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000036159A1 (en) * | 1998-12-11 | 2000-06-22 | Danieli & C. Officine Meccaniche S.P.A. | Method and apparatus for the direct reduction of mineral iron with optimized injection of reducing gas |
| US6379423B1 (en) * | 1996-06-12 | 2002-04-30 | Deutsche Voest-Alpine Industrieanlagenbau Gmbh | Device and method for producing sponge iron |
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- 2008-06-10 AT AT08773377T patent/ATE497025T1/en active
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- 2008-06-10 WO PCT/EP2008/004623 patent/WO2009000409A1/en active Application Filing
- 2008-06-10 MX MX2009013670A patent/MX2009013670A/en active IP Right Grant
- 2008-06-10 DE DE502008002494T patent/DE502008002494D1/en active Active
- 2008-06-10 CA CA2693003A patent/CA2693003C/en active Active
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| Publication number | Publication date |
|---|---|
| KR101424161B1 (en) | 2014-08-01 |
| CA2693003A1 (en) | 2008-12-31 |
| CN101688259B (en) | 2012-08-15 |
| BRPI0813231B1 (en) | 2016-09-06 |
| CA2693003C (en) | 2016-06-07 |
| EP2173915A1 (en) | 2010-04-14 |
| JP2010531389A (en) | 2010-09-24 |
| US20120118107A1 (en) | 2012-05-17 |
| ZA200908506B (en) | 2011-02-23 |
| MY152136A (en) | 2014-08-15 |
| US8361190B2 (en) | 2013-01-29 |
| US8124005B2 (en) | 2012-02-28 |
| BRPI0813231A8 (en) | 2016-05-31 |
| TW200923104A (en) | 2009-06-01 |
| ATE497025T1 (en) | 2011-02-15 |
| AT505490B1 (en) | 2009-12-15 |
| MX2009013670A (en) | 2010-03-30 |
| US20100192729A1 (en) | 2010-08-05 |
| RU2010102735A (en) | 2011-08-20 |
| EP2173915B1 (en) | 2011-01-26 |
| WO2009000409A1 (en) | 2008-12-31 |
| AU2008267440A1 (en) | 2008-12-31 |
| BRPI0813231A2 (en) | 2014-12-23 |
| KR20100025557A (en) | 2010-03-09 |
| PL2173915T3 (en) | 2011-06-30 |
| RU2465335C2 (en) | 2012-10-27 |
| AT505490A1 (en) | 2009-01-15 |
| AR067193A1 (en) | 2009-09-30 |
| CL2008001882A1 (en) | 2009-01-09 |
| DE502008002494D1 (en) | 2011-03-10 |
| UA97668C2 (en) | 2012-03-12 |
| CN101688259A (en) | 2010-03-31 |
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